Effect of Nitrobenzene on Yield of Bell Pepper (Capsicum annuum L.) and Sweet Cucumber (Cucumis sativus L.) under Green House Condition
Bell pepper (Capsicum annuum L.) and Sweet cucumber (Cucumis sativus L.) are grown extensively throughout the world especially in temperate countries. Poor fruit-set as well as loss of reproductive structures due to moisture stress is one of the major barriers to tropical adaptation of bell pepper and sweet cucumber. Nitrobenzene is a combination of nitrogen and plant growth regulators, extracted from sea weeds that act as plant energizer, flowering stimulant and yield booster in crop production. The objective of the present study was to examine the effect of nitrobenzene on bell pepper and sweet cucumber yield to evaluate the optimum dose of nitrobenzene for economically better yield. The study was conducted at a farmer polytunnels located in Pilimathalawa and Athgala areas (WU1) in Sri Lanka. The experiment was laid out in a Completely Randomize Design (CRD) with four treatments randomized in three replicates. The treatments used for Bell pepper, T1 – Control (without Nitrobenzene), T2 – Nitrobenzene 15 percent , T3 – Nitrobenzene 20 percent , T4 – Nitrobenzene 25 percent . Treatments used for Sweet cucumber, T1 – Control (without Nitrobenzene), T2 – Nitrobenzene 10 percent , T3 – Nitrobenzene 15 percent , T4 – Nitrobenzene 20 percent . Accordingly, plants were established in drip-fertigated bags in the Poly tunnel and standard crop management practices were done throughout the study. Nitrobenzene was sprayed on the seedlings 20 and 35 days after they were planted. 6: 30: 30 fertilizer mixture, Albert solution As recommended fertilizers, a 20:20 fertilizer mixture and Ca(NO3)2 were used. Growth parameters, reproductive parameters, fruit setting, and postharvest stages were all measured. The obtained data were subjected to the Statistical Analysis System (SAS) 9.1 Analysis of Variance (ANOVA) procedure. Duncan’s New Multi-Range Exam (DNMRT) At p=0.05, a t-test was used to compare the differences between treatment means. According to the study findings, the Bell pepper performed better in the 25% Nitrobenzene applied treatment, while the Sweet cucumber performed better in the 20% Nitrobenzene applied treatment, with a significant (p=0.05) positive impact on postharvest quality of the fruits and extending the shelf life. As a result, the overall study findings clearly revealed that higher Nitrobenzene levels are economically feasible for improving the overall yield performance of Bell pepper and Sweet cucumber under greenhouse conditions.
Author (s) Details
Horticultural Crops Research and Development Institute, Gannoruwa, Sri Lanka.
Dr. (Mrs.) H. K. L. K. Gunasekera
Department of Agricultural and Plantation Engineering, Faculty of Engineering Technology, The Open University of Sri Lanka.
Prof. J. P. Eeswara
Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka.
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