Carrot Productivity under Various Levels of Irrigation and Fertilization

Abstract

Carrot (Daucus carota L.) is normally grown under irrigation system. In Tanzania, carrot productivity is still low, mainly due to poor agronomic practices as a result of limited information on optimal levels of irrigation water that enhance crop production. Thus, a study was conducted to evaluate the interactions between various irrigation levels under drip irrigation and soil-based NPK fertilizer for optimal growth, yield, and sugar content of carrots in Morogoro, Tanzania. The crop water requirement was calculated in terms of crop evapotranspiration (ETc) as the product of ETo, Kc, and the ground cover reduction factor (Kr). Soil-based fertilizer was applied at a level of 150 kg NPK ha-1, while irrigation levels applied were 100, 80, and 60% of ETc. It was found that the growth, yield, and sugar content of carrots were affected differently at various irrigation water (IW) application levels. The growth parameters of carrots improved consistently to optimum IW levels. Further, the highest yield of 33.0 tons ha-1 of carrots was obtained under 100% of IW, and the lowest yield of 18.47 tons ha-1 was obtained at 60% of IW. The 60 and 80% IW level yields did not differ significantly (p>0.05). Carrots grown at a deficit irrigation water level of 80% were found to have the highest content of sugar. Therefore, for optimal growth and yield, an irrigation level of 100% is recommended for carrots. However, for high sugar content, an irrigation level of 80% is recommended.

Response of Carrot (Daucus carota L.) to Supplementary Irrigation under Rain‐Fed Agriculture at Jimma and Gera, Jimma Zone, South West Ethiopia

“…From this, it can be observed that supplementary irrigation has little or no effect on plant height. Similarly, SAS [33], also pointed out this; according to him, plant heights were not significantly different (p>0:05) between the 80% and 100% water application levels. A similar experiment conducted on vegetable crop/potato showed that there was no statistically significant difference between treatments on plant height of potato, potato′s plant height was not affected by the rate of supplementary irrigation [34].…”

Evaluating the Response of Carrot (Daucus carota L.) to Different Macronutrients and Harvesting Time

“…It can be prepared as a salad, a cooked vegetable for recipes including soups, stews, and curries, as well as pickles, preserves, and desserts. [4]. In spite of the crop's many virtues, growing consumer demand, and the fact that it is a profitable crop, carrot production in Bangladesh is currently limited in scale and efficiency.…”

Assessment of Foliar Application of Biostimulants and Silicon on Yield and Yield Attributing Characters of Mango (Mangifera indica l.) CV. Kesar

“…"The leading mango-growing states in India encompass Andhra Pradesh, Bihar, Gujarat, Uttar Pradesh, Maharashtra, Karnataka, Kerala, Tamil Nadu, Orissa and West Bengal. In Gujarat alone, mangoes are cultivated across a total area of 1,66,358 hectares, with a production of 1,22,2291 MT" [3,4,5,6]. "The cultivation is predominantly concentrated in districts like Valsad, Navsari, Surat, Bharuch, Rajkot, Jamnagar, Kutch and Junagadh, benefiting from the favorable agro-climatic conditions prevalent in these areas".…”