Rice (Oryza sativa) is an important staple grain crop on the Asian continent. Rice production capacity has expanded as a result of daily developments in science and technology, which are helping to feed the world's fast growing population. On the other hand, due to rising customer demand for traditional rice cultivars, farmers are increasingly transitioning to organic cultivation combined with traditional rice. Over the years, rice growers' indiscriminate application of artificial fertilisers has posed a threat to organic farmers. As a result, it's critical to look into the most efficient organic nutrient sources for maintaining soil fertility and rice yield. With this in mind, during Rabi 2020, a Front Line Demonstration (FLD) was held in ten locations across Tamil Nadu's Tiruchirappalli district to popularise TNAU liquid biofertilizers such as Azospirillum, Phosphate solubilizing bacteria, K Solubilizer, Zn Solubilizers, and PPFM in two different traditional rice growing ecosystems. In both the traditional rice cultivars, Karuppu kavuni (5100 kg/ha) and Mapillai samba (5350 kg/ha), treatment of liquid biofertilizer resulted in more productive tillers (13.7 & 14.9 numbers), greater grain production (9.9 & 12.6 percent), and straw yield (10.5 & 10.2 percent). Similarly, using the recommended biofertilizer resulted in a quantum rise in net return. The study found that employing the suggested liquid biofertilizers, Karuppu kavuni and Mapillai samba yielded Rs.157350/ha and Rs.63100/ha, respectively, with a benefit cost ratio of 3.8 and 2.2. By transforming nutrients from non-accessible to available forms, the use of liquid biofertilizer improved the availability of soil nutrients. Finally, it can be stated that the use of prescribed liquid bio-fertilizers is critical for getting higher potential yields and economic returns from traditional rice cultivars. Furthermore, encouraging traditional rice growers to use biofertilizers could lead to improved nutritional security for the rural population.
Author(S) Details
V. Dhanushkodi
ICAR-Krishi Vigyan Kendra, Sirugamani-639 115, Tiruchirappalli, Tamil Nadu, India.
G. Anand
ICAR-Krishi Vigyan Kendra, Sirugamani-639 115, Tiruchirappalli, Tamil Nadu, India.
V. Alex Albert
ICAR-Krishi Vigyan Kendra, Sirugamani-639 115, Tiruchirappalli, Tamil Nadu, India.
S. Nithila
ICAR-Krishi Vigyan Kendra, Sirugamani-639 115, Tiruchirappalli, Tamil Nadu, India.
N. Tamilselvan
ICAR-Krishi Vigyan Kendra, Sirugamani-639 115, Tiruchirappalli, Tamil Nadu, India.
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