Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »

Foliar applications increase yield but modulate tomato fruit quality

The current research aimed 1) at evaluating the effects of three biostimulants (legume-derived protein hydrolysate, PH; plant and seaweed extract, PE and SWE) on yield performance and nutritional quality, mineral profiling, antioxidant activities, lycopene, total phenols and ascorbic acid of greenhouse tomato (Solanum lycopersicum L.) under soil culture and 2) to assess the economic profitability of biostimulant applications.

Plants were sprayed four times during the growing cycle with a solution containing 1, 3, and 3 mL·L−1 of PE, SWE, and PH, respectively. Foliar applications of biostimulants improved the early and total marketable yield of fresh tomato. The increase of total yield by PE, SWE, and PH was 11.7%, 6.6% and 7.0%, respectively, in comparison with untreated plants. Legume-derived PH increased lycopene, total soluble solids, and K and Mg contents, thereby increasing the nutritional value of the fruits.

The applications of SWE, and to a lesser degree PH, enhanced the Ca concentration in the fruit tissue. Our findings indicated that the three tested biostimulants, although they increased the total production cost, improved the nutrient status and yield performance of the crop to a level resulting in net economic benefits.

Access the full study at HortScience.

Publication date: 10/25/2017



Other news in this sector:

6/21/2018 US (WV): Biochar to improve environmental sustainability and water quality
6/14/2018 Vietnam moves to organic fertiliser
6/13/2018 UK: Short-term green manures for intensively cultivated horticultural soils
6/7/2018 "Biosolids prove adequate alternative to conventional fertilizer"
5/28/2018 “Alperujo” compost improves vitamin C content in pepper fruits
5/18/2018 UK: Grants for peatlands restoration
5/15/2018 Identifying key regulator genes may speed improvements in fertilizer use
5/15/2018 CDFA, UC Davis collaborate on study about growers and fertilization
5/14/2018 Algae-based fertiliser turns vegetable farming green
5/7/2018 Nutrient monitoring of basil
5/2/2018 Nutrient monitoring of pepper transplants
5/1/2018 Video: How to calibrate a pH and EC meter
5/1/2018 Nutrient monitoring of tomato transplants
4/26/2018 "Vietnam needs organic fertilizers for clean agriculture"
4/25/2018 Nutritional monitoring in lettuce
4/12/2018 "‘Extreme bacteria’ could be game-changer for organic vegetable production"
4/12/2018 DCM Micro-Mix Minigran RHP approved
4/10/2018 Water and nutrients in fertigation in soil-grown vegetable crops
3/26/2018 Fertinnowa develops water book
3/19/2018 PHL-Australia project explores soil management to increase vegetable production