A glass house study was conducted to evaluate the contribution of indigenous arbuscular mycorrhiza fungi (AMF) in improving maize yield grown on sandy loam of Northern Lombok. The package of organic fertilizers treatments were tested including: without inoculation of mycorrhiza, inoculation mycorrhiza and no added inorganic fertilizers, inoculation of mycorrhiza with cattle manure added, inoculation of mycorrhiza with rock phosphate added and inoculation mycorrhiza with inorganic fertilizers. The treatments were arranged using a Completely Randomized Design with four replications. The results of the study show that the inoculation of AMF significantly increased soil concentration of N, available-P, K and organic-C by 37.39%, 60.79%, 66.66% and 110.15% respectively observed at 60 days after sowing (DAS). The similar trend was also found at 100 DAS, where those nutrients increased by 21.48%, 69%, 43.93% and 37.07%, respectively compared to control. The improving of soil fertility status was also reflected by nutrients uptake (i.e. N, P, K, Ca) as well as growth and yield of maize. N, P, K and Ca uptake increased by 1,608%, 1,121%, 533% and 534%, respectively. Roots and top dry biomass at 60 DAS increased by 718.40% and 337.67%, respectively. The trend increased of the biomass was followed by observation at 100 DAS. Yield components including cobs, grain and weight of 100 grains increased by 313.60%, 411.84% and 137.54%, respectively. In addition, the inoculation of AM with F2 contributed significantly to the spore numbers and root infection.[How to Cite : Astiko W, IR Sastrahidayat, S Djauhari, and A Muhibuddin. 2013. The Role of Indigenous Mycorrhiza in Combination with Cattle Manure in Improving Maize Yield (Zea Mays L) on Sandy Loam of Northern Lombok, Eastern of Indonesia. J Trop Soils, 18 (1): 53-58. doi: 10.5400/jts.2013.18.1.53][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.1.53]

This study aims to determine the response of corn-sorghum cropping patterns on several environmentally friendly fertilization packages that can improve the quality of soil fertility streamline the use of inorganic fertilizers and improve crop yields on dry land. This research was conducted at Akar-Akar Village, Bayan District, North Lombok. The experimental design used was a Randomized Block Design, by testing five environmentally friendly fertilization packages on the corn-sorghum cropping pattern and repeated 4 times. The results showed that the response of maize-sorghum cropping patterns to the fertilizing package 60% lower than the recommended fertilizer dosage with the addition of 12 tons of manure per ha accompanied by mycorrhizal inoculation increasing soil fertility shown by increasing nutrient status of N, P, K and ingredients soil organic matter, increasing plant nutrient uptake (N, P, K and Ca), growth, crop yields and MA activity in the soil.

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Drylands plays an important role to increase agricultural production. In addition, it also contributes to land use efficiency. The intercropping system provides a solution to increase agriculture productivity in dryland. The objective of this research was to determine the mycorrhizal population, growth, and crop yield of several maize and soybean varieties grown in the field using an intercropping system. The methodology conducted in this study involved a randomized block design with 5 treatment intercropping varieties combination of maize and soybean, namely V1=NK212: Biosoy I, V2=Bima 20 URI: Dega I, V3=NASA 29: Detap, V4=Bisi 18: Biosoy II, V5=Srikandi Kuning: Anjasmoro. Each treatments were repeated three times to obtain 15 experimental plots. The results showed that the mycorrhizal population, growth, and yield of Bisi 18 maize intercropping and Biosoy II soybean varieties obtained the highest value. Mycorrhizal population, wet and dry biomass weight of root, shoots, yield, the highest was obtained in the intercropping of maize varieties Bisi 18/soybean variety Biosoy II. The highest yield was given by the intercropping of maize varieties Bisi 18 and soybean varieties Biosoy II with maize dry seed grain weight 7.4 tons/ha and a soybean dry seed grain weight of 0.94 tons/ha.

Abstract. Astiko W, Fauzi MT, Sukartono. 2016. Mycorrhizal population on various cropping systems on sandy soil in dryland area of North Lombok,. Inoculation of arbuscular mycorrhizal fungi (AMF) on maize in sandy soil is expected to have positive implications for the improvement of AMF population and nutrient uptake. However, how many increases in the AMF population and nutrient uptake in the second cycle of a certain cropping system commonly cultivated by the farmers after growing their corn crop have not been examined. Since different cropping systems would indicate different increases in the populations of AMF and nutrient uptake. This study aimed to determine the population AMF and nutrient uptake on the second cropping cycle of corn-based cropping systems which utilized indigenous mycorrhizal fungi on sandy soil in dryland area of North Lombok, West Nusa Tenggara, Indonesia. For that purpose, an experiment was conducted at the Akar-Akar Village in Bayan Sub-district of North Lombok, designed according to the Randomized Complete Block Design, with four replications and six treatments of cropping cycles (P0 = cornsoybean as a control, in which the corn plants were not inoculated with AMF; P1 = corn-soybean, P2 = corn-peanut, P3 = corn-upland rice, P4 = corn-sorghum, and P5 = corn-corn, in which the first cycle corn plants were inoculated with AMF). The results indicated that the mycorrhizal populations (spore number and infection percentage) were highest in the second cycle sorghum, achieving 335% and 226% respectively, which were significantly higher than those in the control. Increased uptake of N, P, K and Ca the sorghum plants at 60 DAS of the second cropping cycle reached 200%; 550%; 120% and 490% higher than in the control. The soil used in this experiment is rough-textured (sandy loam), so it is relatively low in water holding capacity and high porosity.