Water distribution officials at the secondary level mostly have not considered type of soil to distribute water irrigation for soybean cultivation. This study aimed to determine the optimal irrigation for soybean production at various soil types in Lombok. The study was conducted in 3 texture soil types of sandy loam, loam and clay. Each soil type was applied four treatments of irrigation water: 1 time (15 days after sowing, DAS); 2 times (15 and 45 DAS); 3 times (15, 30 and 45 DAS) and 4 times (15, 30, 45 and 60 DAS) and arranged in a completely randomized block design and repeated five times. The results showed that the highest soybean yield was obtained 4 times irrigation in sandy loam soil. In loam soil type, the highest yield of soybean was obtained at 4 times although this was not significantly different with 3 times irrigation. In clay soil type, the highest soybean yield was obtained at 4 times irrigation treatment, but this was almost a similar yield with 3 times irrigation treatments. The study suggests that schedule water delivery for soybean cultivation is recommended to increase soybean production in irrigated land.

<p><strong>ABSTRACT</strong><strong>.</strong> Research on the benefits of Trichoderma-enriched compost (Tricho-compost) to improve soil fertility and yield of some vegetables has been widely reported. The objective was to study the effect of Tricho-compost application on productivity and storability of shallot. The experiment was laid out in a randomized block design at Labuan Lombok Village, Pringgabaya, East Lombok District, West Nusa Tenggara Province, during June to August 2017. There were five treatments with three replications, i.e., T1 = no fertilizer (control), T2 = 10 t/ha compost, T3 = NPK (250 kg/ha NPK, 150 kg/ha Urea, and 150 kg/ha SP-36), T4 = T3 + T2, and T5 =T3 + 10 t/ha Tricho-compost. The results showed that shallot with T5 treatment produced higher height at 20, 40 and 60 days after planting (DAP), fresh weight at 40 and 60 DAP, and dry yield. The plant height, fresh weight and dried yield were higher in T5 than those of plants in T4 for 3.7%, 8.7%, and 8.3%, respectively. Weight lost in T5 was 2.7% lower than T4 after storing for 90 days, indicating T5 shallot had better storability. These data indicated the potential of Tricho-compost to improve growth, yield, and storability of shallot.</p><p><strong>Keywords</strong>: <em>Allium cepa ascalonicum</em>; Productivity; Storability; Tricho-compost; Tropical dryland</p><p><strong>ABSTRAK</strong><strong>.</strong> Penelitian terkait pemanfaatan kompos diperkaya Trichoderma sp. (Tricho-kompos) untuk meningkatkan kesuburan tanah dan produksi berbagai sayuran telah  dipublikasikan secara luas. Tricho-kompos terbuat dari kompos organik yang diperkaya Trichoderma sp. yang telah diperbanyak dalam media beras. Tujuan penelitian ini adalah mengetahui pengaruh pemupukan menggunakan Tricho-kompos terhadap produktivitas dan daya simpan bawang merah di lahan kering Lombok Timur. Percobaan lapangan dilaksanakan menggunakan Rancangan Acak Kelompok  di Desa Labuhan Lombok, Kecamatan Pringgabaya, Kabupaten Lombok Timur, Nusa Tenggara Barat, pada bulan Juni sampai Agustus 2017. Terdapat lima perlakuan pemupukan dengan tiga ulangan, yaitu T1 = tanpa pupuk (kontrol), T2 = kompos 10 ton/ha, T3 = NPK (250 kg/ha NPK, 150 kg/ha Urea, dan 150 kg/ha SP-36), T4 = T3 + T2, dan T5 = T3 + Tricho-kompos 10 ton/ha. Hasil percobaan menunjukkan bahwa bawang merah dalam perlakuan T5 menghasilkan tanaman yang lebih tinggi pada umur 20, 40, dan 60 hari setelah tanam (HST), berat berangkasan pada umur  40 dan 60 HST, dan berat kering eskip. Tinggi tanaman, berat berangkasan segar, dan berat kering eskip lebih tinggi dalam perlakuan NPK dan Tricho-kompos (T5) dibandingkan dengan perlakuan NPK dan kompos (T4), yaitu sebesar 3,7%, 8,7%, dan 8,3% secara berurutan, sedangkan susut bobot dalam T5 lebih rendah 2,7% daripada T4 setelah disimpan 90 hari, hal tersebut mengindikasikan bahwa daya simpan bawang merah lebih baik dalam T5. Hasil percobaan ini menunjukkan potensi pemupukan Tricho-kompos dalam meningkatkan pertumbuhan, produksi, dan daya simpan bawang merah yang ditanam di lahan kering tropis Kabupaten Lombok Timur. </p>

Organic matter content in the dryland farming system tends to decrease rapidlyin most of arid region of Eastern Indonesia. This experiment aimed to test that hypothesis by growing casava and mungbean with and without organic fertilizer (cattle manure) under monoculture and intercropping. The study used a factorial completely randomized block design. The first factor is two cropping systems, namely monoculture and intercropping, the second factor is 2 applications of organic fertilizer (compost), namely 1) No compost and 2) Compost. Each treatment uses 6 replications. The results showed a significant effect of treatment on cassava yield component and productivity, while mungbean growth and yield was similar between treatment. Cassava grown under intercropping system with additional cattle manure was significantly produced the longest tuber (71.40 cm) and the largest number of tubers (6.40 tubers.plant-1). It also contributed to the highest tuber productivity (28.40 t.h-1), followed by yield of casava under intercropping system without compost (26.00 t.h-1), then the casava monoculture system with compost (21.80 t.h-1). The least was the monoculture system without compost (21.70 t.h-1). This experiment proved that additional organic fertilizer under intercropping system could increase the productivity of dryland (LER = 2.13).

Four packages of peanut technologies, PTB1 (soil tillage, certified seed, dibbling with 40cmx10cm and 2 seeds/hole, seeds treatment, fertilizer 200 kg/ha Phonska (NPK fertilizer), and pests control with IPM methods), PTB2 (similar to PTB1 except for no seed treatment and fertilizer of urea for 50 and SP36 for 100 kg/ha), PTB3 (similar to PTB2 except for 40x15cm spacing and fertilizer of urea 50 kg/ha), and PTP (famer practice, uncertified seeds, irregular spacing, no seed treatment, no fertilizer, and no pest control) were examined the agronomic adaptability and economy value in pumice stone mining land at the Akar-akar Village of North Lombok District. Each package that was applied on an area of 0.5 ha was repeated three times at different farmers group. Economic analysis was performed to obtain revenue over variable costs (RAVC) and marginal benefit cost ratio (MBCR). The results showed that the highest fresh pod yield (4.50 t/ha) and the highest dry pod yields (2.30 t/ha) were observed for PTB1. These values, however, did not significantly different from those of other PTP treatments. The lowest fresh and dry pod yields were observed for at PTP treatment and these were significantly different from all PTB treatments. The highest of net income of farmers from the application of package of technologies was obtained from the PTB1 (Rp 8.970.00), while the highest MBCR value was obtained from the PTB3 (5.51). This indicated that the PTB3 was the promising peanut package of technology that may be applied on abandoned pumice stone mining land.

Peanuts (Arachis hypogaea L.) are the second main commodity in the annual cropping pattern in lowland and dryland in North Lombok District of NTB Province. However, peanut productivity is still low, and it varies across regions, which might be due to the traditional crop management of farmers and the difference in land suitability classes. Effects of  crop varieties and land suitability on the peanut productivity have not been evaluated in the Region. Thus, this study aimed to evaluate the productivity and profitability of peanut varieties at various land classification in KLU NTB. The experiment was arranged in a Split Plot Design consisting of three classes of land suitability as main plot and six peanut varieties as sub-plot with three replications. The results showed that the land suitability classes have a significant effect on the agronomic variables of peanut varieties, including plant height, number of branches, number of pods and productivity. The highest peanut yield was obtained at suitable land class (S1), followed by moderately suitable land class (S2) and marginally suitable land class (S3) at 2.37 ton.ha-1, 2.08 ton.ha-1 and 1.71 ton.ha-1, respectively. Likewise, the R/C ratio follows a similar pattern to productivity in various land suitability classes. The highest yield (above 2 ton.ha-1) in each land suitability class was produced by Kelinci variety, followed by Tuban, Bima and Talam varieties. Those varieties have potential prospective to be developed in North Lombok Regency.