Response of Cape gooseberry (Physalis peruviana L.) to nitrogen application under sandy soil conditions

Abstract

The effect of different nitrogen (N) levels on growth and productivity of Cape gooseberry, cultivated in new reclaimed lands (sandy soil) at Nubaria region in Egypt, was investigated. Nitrogen levels were applied at rates of 50, 100, 150 and 200 kg N ha -1 as ammonium sulfate. The amount of N for each treatment was divided into five applications (after transplanting, seven days later, at the beginning of flowering, during fruit set and after the first harvest). Several growth parameters and yield were recorded in addition to nitrogen content in leaves. The results revealed that Cape gooseberry plants responded positively to nitrogen levels in sandy soils. Yield, number of fruits, and diameter of fruits increased significantly by increasing the nitrogen level up to 200 kg N ha -1 . Moreover, plant height, number of leaves, N-content in leaves and N-uptake shows a positive reaction to increased nitrogen supply. The quantitative effects of nitrogen on Cape gooseberry plants and the possible explanations of plant responses are discussed.

Invasiveness of Cut-Leaf Ground-Cherry (Physalis angulata L.) Populations and Impact of Soil Water and Nutrient Availability

“…This positive reaction of growth, biomass, and seed number to increased nutrient availability has been recently reported in related species such as P. peruviana L. (El-Tohamy et al, 2009). It is also suggested that nutrient availability is a critical factor affecting the successful establishment of several invasive plants in arid environments (Rahlao et al, 2010), while the invasive potential of a species such as P. angulata, which withstands low-resource availability, is even higher.…”

Agronomic aspects of two Physalis species as a function of Nitrogen fertilization

“…are scarce, with a few studies in P. peruviana (Rufato et al, 2008;El-Tohamy et al, 2009;Muniz et al, 2011) and only one about P. pubescens responses submitted to fertilization with tanned corral manure (Peixoto et al, 2010). This last one is still little known and due to its condition of weed did not arouse, until some time ago, the interest in its study.…”

Increasing Salinity Tolerance of Eggplant Under Ras Sudr Conditions

“…The results are in the same trend with those obtained by Jack and Evans, (2000), Abd El-Al 2003 The obtained results may be due to the positive effect of biological organic and nutritional solutions to provide some amino compounds required for plant growth. The enhancement of growth characters could be due to simulatory effects on eggplant and increase endogenous promoting hormones of plant and increase plant growth (Gomaa et al, 2005;El-Tohamy et al, 2008 andGhonam et al, 2010). The superiority of Algreen and Mega Power compounds for stimulation of plant growth might be due to their effects on mineral content of leaves, i.e.…”

“…Calcium has been shown to ameliorate adverse effects of salinity on plants, it is well known to have regulatory role in metabolism, also, sodium ions may complete with calcium ions for membrane-binding sites (Cramer et al, 1986;Ehret et al, 1990). In the same line, commercial humic acid application and some minerals or mixing of N, P and K fertilizers with organic manures or application of putrescine (one of poly amine group), yeast and vitamin C improved growth, yield, quality and increased uptake to N, P, K, Ca, Mg, Fe, Zn and Mn in tomato and eggplant (Erik et al, 2000;Abd Elal, 2003;El-Tohamy et al, 2008).…”