Investigation was undertaken to screen out the extract of botanicals viz., neem leaf, neem oil, garlic, marsh paper plant, allamanda leaf, wood apple leaf, betel leaf and biological antagonists viz., Trichoderma viride and T. harzianum. Positive control was soil amendment with Provax and negative control with untreated soil. Soil drenching with Provax and untreated soil showed 7.65 and 37.5% wilt of tomato. Wilt incidence varied from 8.5 - 30.81%. Botanicals and biocontrol agents had significant effect on yield of tomato. Provax gave the highest (30.55 t/ha) yield which was statistically identical to garlic extract (29.66 t/ha) and untreated control showed the lowest (20.19 t/ha) yield which was followed by soil drenching with neem leaf extract. Both the biocontrol agents viz., T. harzianum and T. viride as broth and compost significantly reduced wilt incidence of tomato in the field over control.
A field experiment was carried out at Spices Research Centre, Shibgonj, Bogra during two consecutive years, 2013-2014 and 2014-2015 to evaluate the response of integrated nutrient management on nutrient uptake, protein content and seed yield of fenugreek (Trigonella foenumgraecum L.) var. BARI Fenugreek-2. The field experiment was conducted in combination with inorganic fertilizer and organic manure. The result showed that the treatment T 7 compeises application of PM @ 4 t ha -1 + CF (IPNS) produced the maximum seed yield (2.1 t ha -1) but statistically identical to T 8 (VC @ 3 t ha -1 + CF (IPNS) and T 6 (CD 5 @ ha -1 + CF (IPNS). In case of stover yield, the treatment T 7 produced the highest yield (4.89 t ha -1 ). The grain yield was increased over control and ranged between 65.85 to 156.10 %.The treatments T 7 and T 8 resulted in higher nutrient use efficiency along with higher N, P, K and S uptake by the plant. The application of inorganic fertilizer along with manure influenced the nutrient concentration in fenugreek seed and stover yield. The higher seed with N, P, K and S concentrations were observed in the treatments where poultry manure @ 4 t ha -1 applied in combination with chemical fertilizers. The combined application of fertilizer and organic manure increased the organic carbon (OC %), organic matter (OM %), total N, available P and available S in post harvest soils. The findings indicate that the integrated use of inorganic fertilizer and organic manure should be encouraged to improvement the deteriorating soil fertility and increased crop yield of fenugreek.
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