Effects of nettle slurry (Urtica dioica L.) used as foliar fertilizer on potato (Solanum tuberosum L.) yield and plant growth

被引:13
|
作者
Garmendia, Alfonso [1 ]
Dolores Raigon, Maria [2 ]
Marques, Olmo [3 ]
Ferriol, Maria [1 ]
Royo, Jorge [3 ]
Merle, Hugo [3 ]
机构
[1] Univ Politecn Valencia, Inst Agroforestal Mediterraneo, Valencia, Spain
[2] Univ Politecn Valencia, Inst Univ Conservat & Mejora Agrodiversidad Valen, Valencia, Spain
[3] Univ Politecn Valencia, Dept Ecosistemas Agroforestales, Valencia, Spain
来源
PEERJ | 2018年 / 6卷
关键词
Nettle slurry; Foliar fertilizer; Potato yield; Urtica dioica; Solanum tuberosum; Equisetum slurry; Organic agriculture; Natural products; Organic farming; Effect on yield; QUALITY; EXTRACTS;
D O I
10.7717/peerj.4729
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Organic agriculture is becoming increasingly important, and many natural products are now available for organic farmers to manage and improve their crops. Several ethnobotanical studies have indicated that the use of nettle slurry as fertilizer in organic farming for horticultural crops is spreading. Sometimes, however, the consequences of using these natural products have been poorly evaluated, and there is very little scientific evidence for the effects of using these slurries. In this study, we aimed to analyze the possible effect of nettle slurry on potato yields produced by organic farming. To achieve this main objective, we assessed the effect of nettle slurry on potato yields, plant size and growth parameters, chlorophyll content, and the presence of pests and diseases. Different slurry doses were assessed in 36 plots and nine variables were measured during the crop cycle. Under these field experimental conditions, nettle slurry (including one treatment with Urtica in combination with Equisetum) had no significant effects on yield, chlorophyll content, or the presence of pests and diseases in organic potato crops. The highest chlorophyll content was found in the double dose treatment, but the difference was not significant. This result, together with a small improvement in plant height with the double dose treatment, might indicate very slight crop enhancement which, under our experimental conditions, was not enough to improve yield. The Urtica and Equisetum slurry chemical analyses showed very low levels of nitrogen, phosphorus, and potassium.
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页数:22
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