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The Growth Performance of Oil Palm Seedlings in Pre-Nursery and Main Nursery Stages as a Response to the Substitution of NPK Compound Fertilizer and Organic Fertilizer Adileksana, Cahyo; Yudono, Prapto; Purwanto, Benito Heru; Wijoyo, Rachmanto Bambang
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

The need of nitrogen (N), phosphate (P) and potassium (K) nutrient in oil palm nursery are usually fulfilled with synthetic chemical fertilizers such as NPK fertilizer. The application of NPK fertilizer can cause the soil to become hard due to the accumulation of the residue left on the ground. Cow manure is able to substitute NPK fertilizer based on the chemical status of the soil. This study aimed at analyzing the effect of NPK fertilizer substitution with cow manure on the growth of oil palm seedlings in the pre-nurseries and main nurseries. The experiment was conducted from February to September 2018 in the Banguntapan research and experimental field, Faculty of Agriculture, Universitas Gadjah Mada. The experiment applied the Randomized Complete Block Design (RCBD) with one factor and six blocks as replications. The factors were subtitution using the replacement series method with five levels of doses, 100% NPK, 75% NPK + 25% cow manure, 50% NPK + 50% cow manure, 25% NPK + 75% cow manure and 100% cow manure. The observed parameter variables were root lenght, root area, hump diameter, leaf area, the number of leaves, plant height and plant dry matter. The use of 25% NPK substitute with 75% organic material was the best result in increasing the growth performance of oil palm seddlings in pre-nursery and main nursery.

Effects of different management practices on the growth and yield of corn Syafrizal, Yusril; Sevirasari, Nindy; Adileksana, Cahyo
Jurnal Ilmu Pertanian Vol 9, No 1 (2024): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.89943

In Indonesia, corn is an important commodity that serves as the second source of carbohydrates after rice, whose productivity is influenced by management practices applied during cultivation. This research aimed to determine the effects of different management practices on the growth and yield of corn. This research was arranged in a single-factor Randomized Complete Block Design, with different agriculture management practices as treatments, consisting of TI1 = Best Practices (Drip Irrigation + Rice Husk + Mycorrhiza), TI2 = Farmers’ Practices (Furrow Irrigation) + Mycorrhiza, and TI3 = Farmers’ practices (Furrow Irrigation). The data observed were analyzed using Analysis of Variance and followed by the Post Hoc Tukey’s HSD at α= 5%. The results showed that the TI1 produced significantly higher plant height, stem diameter, leaf dry weight, weight of cob with cornhusk and kernel dry weight, and effectively suppressed weed growth compared to TI2 and TI3. TI1 produced a significantly higher number of leaves, root dry weight, and total dry weight compared to TI3, but not significantly different compared to TI2. TI1 produced not significantly different stem dry weight and harvest index compared to TI2 and TI3. The kernel dry weight per plant observed in TI1 was 157.63 g, which was 14.22% and 22.91% higher than in TI2 and TI3, respectively. Based on the coefficient correlation and path analysis, the number of leaves, plant height, and total dry weight should be considered as important plant growth variables to produce high kernel dry weight.

Effects of rice husk mulch dosage on the growth and yield of corn Syafrizal, Yusril; Sevirasari, Nindy; Adileksana, Cahyo; Plena, Stella Nostra Gracia
Jurnal Ilmu Pertanian Vol 9, No 2 (2024): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.93787

Drought significantly affects corn phenology and yield. Rice husk mulching is a technical cultural strategy to mitigate water stress caused by drought. This research aimed to determine the optimal dosage of rice husk mulch for the growth and yield of corn. Determining the optimal dosage of rice husk mulch is essential for agricultural efficiency, environmental sustainability, and plant health. A single-factor Randomized Complete Block Design was arranged for this research. The treatment consisted of varying dosages of rice husk mulch, namely 2; 4; 6; 8 kg.m⁻² rice husk mulch and without rice husk mulch. The data were analyzed using Analysis of Variance and followed by the Post Hoc Tukey’s HSD at α= 5%. The highest of plant height (185.99 cm), number of leaves (12.58), stem diameter (23.32 mm), stem dry weight (146.40 g), leaf dry weight (37.20 g), root dry weight (53.90 g), total dry weight (237.50 g), and suppressed weeds up to 234.47% were achieved in 6 kg.m⁻² rice husk mulch. At this dosage, it impacts the optimal cob weight with cornhusk and the dry weight of the kernels. The optimal dosage of rice husk mulch was 5.9 kg.m⁻². This study shows that optimizing plant height and cob weight with cornhusk per plant are key indicators for achieving high corn yield. The study demonstrates that rice husk mulch can suppress weeds, and enhance corn growth and yield during drought, compared to conditions without rice husk mulch.

Plant Growth Analysis of Maize (Zea mays): Impact of Second Paclobutrazol Application Timing Syafrizal, Yusril; Wahyuningsih, Gendro Indri; Ulfah, Fajarani; Pratama, Ananta Bayu; Adileksana, Cahyo
International Journal of Technology, Food and Agriculture Vol. 2 No. 1 (2025): February
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v2i1.5847

Maize is a vital source of carbohydrates and livestock feed in Indonesia, where domestic demand is rising despite inconsistent productivity. Innovative cultivation methods, such as paclobutrazol (PBZ) application, are being explored to boost maize productivity. PBZ affects maize's growth, with its effectiveness depending on the timing of application. This study was to figure out the optimal timing of PBZ application to improve the synchronization of cob and female flower emergence, thereby maximizing plant growth and yield. The experiment utilized a randomized complete block design (RCBD) comprising five treatments: a control and four intervals for the second PBZ application (3, 6, 9, and 12 days after the first application), each replicated three times. Data were analysed using Analysis of Variance (ANOVA) at a 5% significant threshold, succeeded by Tukey’s test. Results showed that the timing of the second PBZ application significantly influenced maize growth and yield. A three-day interval after the first PBZ application produced the highest values in key morphological variables, such as green leaf index and total dry weight. This timing also optimized plant growth metrics, leading to higher maize yield. In conclusion, a three-day interval is recommended for maximizing maize productivity.

Effects of different management practices on the growth and yield of corn Syafrizal, Yusril; Sevirasari, Nindy; Adileksana, Cahyo
Jurnal Ilmu Pertanian Vol 9, No 1 (2024): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.89943

In Indonesia, corn is an important commodity that serves as the second source of carbohydrates after rice, whose productivity is influenced by management practices applied during cultivation. This research aimed to determine the effects of different management practices on the growth and yield of corn. This research was arranged in a single-factor Randomized Complete Block Design, with different agriculture management practices as treatments, consisting of TI1 = Best Practices (Drip Irrigation + Rice Husk + Mycorrhiza), TI2 = Farmers’ Practices (Furrow Irrigation) + Mycorrhiza, and TI3 = Farmers’ practices (Furrow Irrigation). The data observed were analyzed using Analysis of Variance and followed by the Post Hoc Tukey’s HSD at α= 5%. The results showed that the TI1 produced significantly higher plant height, stem diameter, leaf dry weight, weight of cob with cornhusk and kernel dry weight, and effectively suppressed weed growth compared to TI2 and TI3. TI1 produced a significantly higher number of leaves, root dry weight, and total dry weight compared to TI3, but not significantly different compared to TI2. TI1 produced not significantly different stem dry weight and harvest index compared to TI2 and TI3. The kernel dry weight per plant observed in TI1 was 157.63 g, which was 14.22% and 22.91% higher than in TI2 and TI3, respectively. Based on the coefficient correlation and path analysis, the number of leaves, plant height, and total dry weight should be considered as important plant growth variables to produce high kernel dry weight.

Effects of rice husk mulch dosage on the growth and yield of corn Syafrizal, Yusril; Sevirasari, Nindy; Adileksana, Cahyo; Plena, Stella Nostra Gracia
Jurnal Ilmu Pertanian Vol 9, No 2 (2024): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.93787

Drought significantly affects corn phenology and yield. Rice husk mulching is a technical cultural strategy to mitigate water stress caused by drought. This research aimed to determine the optimal dosage of rice husk mulch for the growth and yield of corn. Determining the optimal dosage of rice husk mulch is essential for agricultural efficiency, environmental sustainability, and plant health. A single-factor Randomized Complete Block Design was arranged for this research. The treatment consisted of varying dosages of rice husk mulch, namely 2; 4; 6; 8 kg.m⁻² rice husk mulch and without rice husk mulch. The data were analyzed using Analysis of Variance and followed by the Post Hoc Tukey’s HSD at α= 5%. The highest of plant height (185.99 cm), number of leaves (12.58), stem diameter (23.32 mm), stem dry weight (146.40 g), leaf dry weight (37.20 g), root dry weight (53.90 g), total dry weight (237.50 g), and suppressed weeds up to 234.47% were achieved in 6 kg.m⁻² rice husk mulch. At this dosage, it impacts the optimal cob weight with cornhusk and the dry weight of the kernels. The optimal dosage of rice husk mulch was 5.9 kg.m⁻². This study shows that optimizing plant height and cob weight with cornhusk per plant are key indicators for achieving high corn yield. The study demonstrates that rice husk mulch can suppress weeds, and enhance corn growth and yield during drought, compared to conditions without rice husk mulch.

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