Combined Impacts of Compost, Poultry Manure and NPK Fertilizers on Yield of Okra Plant (Abelmoschus esculentus L.)
Combined Impacts of Compost, Poultry Manure and NPK Fertilizers on Yield of Okra Plant (Abelmoschus esculentus L.)
Zafar Abbas1*, Muhammad Mubashir1, Umair Riaz1, Zeenat Javid1, Muhammad Ashraf1, Saeed ur Rehman1, Muhammad Javid Qamar1, Syed Ali Zulqadar1 and Shahzada Munawar Mehdi2
ABSTRACT
Vegetables produce a great contribution in maintaining the proper diet of human beings. Especially Okara has been gained more importance due to its nutritional value. According to the U.S. Department of Agriculture (USDA) 100 grams of okra contains about 1.93g, 0.19 g, 7.45 g 3.2 g and 1.48 g of protein, fat, carbohydrates, fiber and sugar, respectively. As well as one gram of okra contain 31.3 mg and 299mg of vitamin K and potassium, respectively. Therefore, to examine the effect of different forms of fertilizers (organic and inorganic) on the yield and physiochemical attributes of okra Abelmoschus esculentus a field trial was conducted. For this purpose, organic form of fertilizers like kitchen waste, poultry manure and compost were used while the inorganic sources were NPK fertilizer. This experiment was laid out in the field area of soil and water testing laboratory for research, Bahawalpur in growing seasons from July to October of 2017. Treatments were arranged in Two factorial Completely Randomized Design CRBD fashion with three replications and six treatments. Treatments are arranged as control T1 (Without fertilizer + No Poultry Manure + No compost), T2 (NPK full dose @ 150 kg ha-1N, 75 kg ha-1P and 60 kg ha-1K), T3 (full dose of poultry manure (PM) @ 30 ton ha-1), T4 (50% NPK+50% Poultry Manure i.e. 75 kg ha-1N, 37.5 kg ha-1P and 30 kg ha-1K +15 ton ha-1 PM), T5 (full dose compost @ 30 ton ha-1), T6 (50% NPK+ 50% compost i.e. 75 kg ha-1N, 37.5 kg ha-1P and 30 kg ha-1K + 15 ton ha-1 compost). Plants growth and yield parameters were determined like the total number of leaves per plant, plant height, fruit length, root and shoot dry weight, fresh fruit weight, the total number of fruits per plant, fruit yield and total yield increase. No significant increase was observed in the yield and growth of okra under control and full NPK fertilizer treatment. Application of organic fertilizers like poultry manure and compost as well as its mixture with full NPK considerably increase the growth and total yield attributes of Okra. On the other hand, in contrast to all other treatments, the joint use of 50% NPK+50% PM exhibits the most significant impact on okra growth.
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