POTENSI PEMANFAATAN MIKORIZA UNTUK MENINGKATKAN KETAHANAN PANGAN

This study aims to examine the mycorrhizal potential for food security in Indonesia. The analysis is based on literature review using secondary data as a source of information. Food productivity has an important role in the lives of many people. Meanwhile, on the one hand, we are faced with immeasurable human growth and land functions that have begun to shift to settlements over time. One way to increase food in Indonesia is to empower marginal lands. Indonesia has a marginal land area that has not been optimized due to problems with the soil, poor nutrients and poor water management. Of course, to overcome this, it is necessary to have an agricultural cultivation approach so that these lands can be utilized. One of the approaches to agricultural cultivation is the application of biological fertilizers, namely mycorrhizae. From several literature studies, it is found that mycorrhizae can increase plant production by increasing nutrient uptake in marginal lands.

RESPON PERTUMBUHAN DAN HASIL SELADA (LACTUCA SATIVA L.) TERHADAP INTERVAL WAKTU APLIKASI PEMBERIAN AIR CUCIAN BERAS

Lettuce is one of the most popular vegetables from various groups, because it does not need special preparation to enjoy it immediately. Its cultivation is relatively easy and does not require special techniques, making lettuce can be grown in polybags or hydroponically. Rice washing water, which is usually not utilized, actually has the potential as liquid organic fertilizer. Besides being practical and environmentally friendly, liquid organic fertilizer can be applied easily. This study aims to determine the effect of the appropriate application time interval for giving rice washing water on the growth and yield of lettuce. This research was conducted in August-October 2020 using polybags containing soil: manure: husk (1: 1: 1). The design used was a single factor completely randomized block design (RAKL). The factor is the application time interval for giving rice washing water with 4 levels, namely: W0 = without giving rice washing water (control), W1 = once every 2 days, W2 = once every 4 days and W3 = once every 6 days with a dose of 50 ml polybag-1. The results showed that the time interval treatment with washing rice water had no significant effect on plant height, number of leaves, diameter, fresh root weight, and total fresh weight of lettuce plants. However, the treatment of giving rice washing water at an interval of 6 days (W3) once showed a better value than without treatment, the time interval for giving rice washing water once every 2 days or 4 days.

TINGKAT ADOPSI PETANI TERHADAP BUDIDAYA ALTERNATIF TANAMAN SAYURAN PADA MUSIM KEMARAU DI LAHAN RAWA LEBAK (Local Farmers Adoption to Alternative Vegetables Cultivation during Dry Season at Tropical Riparian Wetland)

Generally, vegetables cultivation in tropical riparian wetland is conducted only one times per year simultaneously or after rice cultivation. One of constrains of cultivation in tropical riparian wetland is low adoption to technology which can be used by local farmers during dry season. The objective of this research was to introduce result of research to local farmer directly and examine the local farmer’s adoption about the technology based on research to apply in tropical riparian wetland, Pemulutan, South Sumatera. Based on this research, results showed that farmers' interest in cultivating vegetables during the dry season is still low, but it has a chance to be improved. Alternative solutions through watering and adjustment of environmental conditions or adaptation through the selection of cultivation locations and the selection of various types of vegetable crops have been carried out by farmers. However, the application of mulch has not been practiced by farmers in tropical riparian wetland for vegetable cultivation during the dry season due to limited information received, considered as capital intensive, and the sociocultural aspects of the local community.

POTENSI RIZOBAKTERI INDIGENUS SEBAGAI AGENS BIOKONTROL JAMUR FUSARIUM OXYSPORUM F. SP. CUBENSE PENYEBAB PENYAKIT LAYU TANAMAN PISANG

The use of rhizobacteria is an alternative control in suppressing plant disease attacks. The purpose of this study was to obtain indigenous rhizobacteria which have the potential as antagonist agents of Fusarium oxysporum f. sp. cubense. Sampling was carried out randomly selected on endemic lands. Isolation of rhizobacteria using serial dilution method and its antagonist test against Fusarium oxysporum f. sp. cubense uses the dual culture method. The isolation results from 3 banana cultivars (kepok, raja sere, and mas) obtained 24 rhizobacterial isolates with different morphological and physiological characters. The antagonist test results showed that 8 rhizobacterial isolates were able to suppress the growth of Fusarium oxysporum f. sp. cubense and is not plant pathogenic.

POTENSI PEMANFAATAN LIMBAH AIR CUCIAN BERAS PADA TANAMAN PAKCOY (BRASSICA RAPA L.)

Pakcoy as a type of vegetable that we often encounter on the market. This plant can be cultivated easily, and can be consumed directly or processed into complementary vegetables in meatballs, chicken noodles, and other types of food. Excessive use of chemical fertilizers will cause soil damage in the long term. Reducing chemical fertilizers can be done by giving rice washing water, because usually when washing rice, the water used is just thrown away. In fact, this rice washing water waste has the potential as liquid organic fertilizer. The purpose of this study was to determine the effect of rinsing rice washing water on the growth and yield of pakcoy plants. The research design used a randomized block design (RAK) with a single factor, namely the rice washing water rinse, namely C0 = control, C1 = the first rinse of rice washing water, C2 = the second rinse of rice washing water, and C3 = the third rinse of rice washing water. The parameters observed were plant height, number of leaves, plant diameter, fresh root weight, and total fresh weight. The results showed that rice washing water rinse had no significant effect on all observed parameters. However, C3 treatment has the greatest value for all observations compared to the control treatment, C1, or C2.