Integrated Effect of Foliar Fertilization of Fe, Zn and Rates of P Fertilization on Growth and Yield of Cowpea

Abstract

At the Experimental Farm of Faculty of Agriculture, El-Mansoura University, Egypt, a field experiment was carried out, to investigate the effect of zinc and iron individually or mixed as foliar application on cowpea plant growth, chemical composition, yield and its components as well as availability of nutrients in the soil, all that under phosphorus application effect. The experiment was laid out in split plot design with three replicates, assigning twelve treatments consisting of three levels of phosphorus (50, 100 and 150% from recommended dose) as main plot, and four levels of micronutrients foliarly (without, Zn, Fe and Zn+Fe) as sub plot. As for the effect of P-fertilization, the results show that all treatments significantly increased vegetative growth (plant height (cm), no. of branches/plant, no. of leaves/plant), yield and its components (No. of pods/plant, No. of seed/pod, 100 seed weight g and Seed yield Kg/fed.) as well as chemical (N, P, K, Zn and Fe) and quality composition (chlorophyll content, c.protien, T. carbohydraties and C. fiber.). These effects were more obvious especially at higher concentrations of these treatments 150% RD except chlorophyll content, quality parameters with 100% RD. The highest mean values of available P, Zn and Fe in the soil were recorded for the plants treated with P-fertilization at the rate of 100% from recommended dose, whereas the lowest values of available N and K were realized for the same treatment. On the other hand, foliar application with micronutrient has a significant effect on cowpea growth. The highest values of parameters observed with the mix of (Zn+Fe) comparing with the untreated plant. Moreover, the mix of micronutrient (Zn+Fe) recorded the highest values of available P, Zn and Fe, whereas the highest values of available N and K were recorder with the untreated plant. The interaction effect between P fertilization and micro nutrients show a promotive effect on growth parameters with using mix of Zn+Fe. The highest mean values of parameters was recorded under 150% P from RD, whereas the highest mean values of chlorophyll content, quality parameters and available P, Zn and Fe recorded with 100% P from RD and the lowest values of available N and K were realized for the same treatment.

Synergistic effects of inoculating AMF and foliar iron fertilizer on growth and yield of broad bean under North Sinai conditions

“…Additionally, the vital roles of Fe on nodulation and consequently achievement in nitrogen fixation, its roles in heam and non heam enzymes, as a component of photosynthetic pigments as well as in photo assimilation process that was reflected on broad bean plant growth. Furthermore, the obtained results are coinciding with those reported by many researchers (Oliveira et al, 2017;Fouda and Abd-Elhamied, 2017;Nafady et al, 2018;Pereira et al, 2019). Finally, Abd-Alla et al, (2014) found increases in dry matter accumulation of shoots and roots of faba bean which inoculated with AMF and R. leguminosarum in alkaline soil.…”

Effect of Integrated Nutrients Management and some Insecticides on Quality of Cowpea Plants (Vigna unguiculata L.) and Associated Sucking Insect Pests

“…Statistical analyses of data in Table 2, revealed that addition of significantly Integrated nutrients with seed coating by Gaucho increased chlorophyll a, b , a + b and carotene contents in cowpea leaves . Fouda and Abd-ELhamied (2017) found that foliar application with (Zn+Fe) under 100% P-fertilization resulted the highest values of chlorophyll a, b and a + b contents in cowpea leaves .…”

Effect of Bio-Fertilization and Foliar Spraying with some Micro-Elements on Growth and Productivity of Two Faba Bean Cultivars

“…These results are in line with those found by . Knany et al(2009) El-Gizawy andMehasen(2009) and Fouda and Abd-Elhamied (2017).…”

“…of branches and pods/plant, 100-seed weight, seed yield/plant, seed and straw yields/fed, and protein%,) . Fouda and Abd-Elhamied(2017) demonstrated that treatment (foliar application with Fe) significantly increased plant height (cm) , No. of branches/plant, No.…”