IMPACT ASSESSMENT OF SOIL AMENDMENTS ON SOIL CAPPING IN MUNGBEAN PRODUCTION USING CENTRAL PIVOT IRRIGATION SYSTEM IN CLAYEY SOILS
Muhammad Mansoor*, Noman Latif*, Zafar Islam**, Sher Muhammad**, Amanullah* and Muhammad Umair***
A field experiment was conducted to evaluate the soil capping problem under central pivot irrigation system using different soil amendments. The experiment was laid out in randomized complete block design, replicated thrice. Mungbean (Vigna radiata L ) variety “Dera Mung” was used as test crop. Soil amendments were carried out through pure sand and farm yard manure (FYM) in equal proportions and in three different application rates viz., 60:60, -1 45:45 and 30:30 kg plot and an un-amended soil plot was kept as control. The size of each plot was 4m x 3m. The results depicted that parameters such as number of branches per plant, number of pods per plant, pod length, number of grains per pod, 1000-grain weight, and grain yield were significantly affected by different soil amendments at P>0.05, except for number of clusters per plant. -1 -1 Maximum of 6.2 branches plant , 62.6 pods plant , 8.3cm pod length, 8.9 grains -1 pod , and 43.3 g of 1000-grain were recorded in treatment where sand and FYM -1 was applied to Vigna radiata @ 60:60 kg plot . Moreover maximum grain yield of -1 1253 kg ha was also recorded in the same treatment; however, treatments with -1 -1 45:45 and 30:30 (kg plot ) ranked second and third with grain yield of 1195 kg ha -1 and 1153 kg ha , respectively. It was noticed that the bulk density value of the -3 -3 soil was decreased from 1.754 g cm to 1.123 g cm when pure sand and FYM was -1 applied @ 60:60 kg plot .
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