Yield and quality responses of citrus (Citrus reticulate) and tea (Podocarpus fleuryi Hickel.) to compound fertilizers

Abstract

Experiments were carried out with citrus (Citrus reticulate) and tea (Podocarpus fleuryi Hickel.) to study the effects of compound fertilizers on their yields and quality. In the citrus experiment, application of compound fertilizers increased available P, K and Mg contents in soil but decreased alkali-hydrolyzable N contents in soil and N, P and K contents in leaves. In the tea experiment, application of compound fertilizers increased available P, K and Mg contents in soil and N, P, K and Mg contents in leaves but decreased alkali-hydrolyzable N in soil compared with the urea treatment. Application of compound fertilizers could improve the quality of citrus and tea, increase their yields and enhance their economical profits significantly. Compared with the control, application of compound fertilizers increased citrus yields by 6.31, 12.94 and 17.69 t/ha, and those of tea by 0.51, 0.86 and 1.30 t/ha, respectively. Correspondingly, profits were increased by 21.4% to 61.1% for citrus and by 10.0% to 15.7% for tea. Optimal rates of compound fertilizers were recommended for both crops.

Soil Fertility in relation to Landscape Position and Land Use/Cover Types: A Case Study of the Lake Kivu Pilot Learning Site

“…Variation of nutrients with landscape position and landuse in Bufundi is in line with Wang et al [5] observations in small catchment in loess plateau and Wang et al [54] findings on commercial tea plantations in China that received nitrogen fertilizers. It also corroborates the findings of Majaliwa et al [44] in Kibale-Uganda.…”

A Comparative Study on Fertilization of Washington Navel Orange Trees

“…The obtained results with respect to the response of fruiting parameters under study to the different levels of NEC were supported by the findings of several investigators, Singh and Singh (1995)on mango trees; Cai and Qian (1995) on apple trees; Wutschen (1989), Wang et al (2006), Abdel-Rahman et al (2009) and Noha and Manal (2014) on citrus, they mentioned that all investigated fruiting parameters were positively influenced by the different treatments of Natural Elements Compound soil applied fertilization. As for the effect of the Effective Micro-organisms soil added rate was concerned the present results are in conformity with those reported by some researchers, Pachoel et al (1996), Wibisono et al (1996) on citrus trees; Chages et al (2000) on papya trees and El-Kholy (2004) on banana plants., who indicated that, EM soil applied significantly increased all investigated fruiting parameters in most cases.…”

“…Therefore, recently scientists are attempting to develop new agents which can be used for promoting growth and yield of plants and at the same time without causing problems in environment. Thus, the alternative use of natural elements compounds (NEC) with effective micro-organisms (EM) fertilizers were done and few studies as well as many attempts in order to replace partially mineral fertilizers by some reseachers , Cai and Qian (1995), Abou Sayed (1997), Joo etal (1999), Bakr etal (2003), Wang et al (2006), Helial et al (2003), Wu et al (2000), Paschole et al (1996), El-Kholy (2004), Abdel-Rahman et al (2009), andNoha andManal (2014) they reported that both NEC and EM significantly increased fruit set, fruit productivity and improved both fruit physical and chemical characteristics of Washington navel orange trees.…”

Effects of Different Nitrogen, Phosphorus, Potassium Rates on the Quality and Quantity of Citrus Plants, Variety Thomson Novel Under Rainfed and Irrigated Conditions

“…The high and significantly effects of N200 treatment indicate that the trees require such amount of N for optimum growth and fruit production (Syvertsen and Smith, 1996;Wang et al, 2006). Nitrogen is a very important nutrient for plant growth and yield production, especially at the vegetative growth stage.…”