Pole bean: continue up to 87 days after sowing for a 3½ month crop, thus requiring 25 fertigations.

15-30 days: 2.0kg 19-19-19 /fertigation (6 fertigations)

33-45 days: 3.0 kg 19-19-19 +1.0 kg KNO₃ + 2.0 kg Mono Ammonium Phospate/fertigations (5 fertigations)

48-66 days: 4.0 kg 19-19-19 + 1.0 kg KNO₃ + 1.5 kg Mono Ammonium Phosphate/fertigation (7 fertigations)

(55 kg 19-all+12 kg KNO₃ + 20 kg MAP for bush bean).

Pole bean: continue fertigation upto 87 days after sowing (14 fertigations) (83 kg 19-all+19 kg KNO₃ + 31 kg MAP).

The female fly pierces the young leaves to lay eggs and sucks the exuding sap. This leaves yellow blotches on the leaves, which are the first signs of bean fly attack and may serve as early symptom useful for monitoring the presence of this pest in the field. Maggots mine their way from the leaves down to the base of the stem, where they complete their development. Maggot feeding destroys the tissue causing the stem to swell and split and reducing formation of lateral roots.

Start scouting for presence of pest 2-3 weeks after germination by inspecting the leaves and stem base for symptoms. Look out for:

– swelling and cracking on the base of the stem

– oviposition marks on the leaves

– larvae and pupae in the stem base (root collar)

Avoid planting in May-June when the incidence is generally high.

If stem fly adults are observed on the plants immediately after germination, spray pulverised neem seedpowder extract (PNSPE) (40 g/l) or Neem soap/ pongamia soap (10 g/l) at 7, 10 and 15 days after sowing.

Otherwise give only two sprays at 10 and 15 days after sowing.

Chemical treatment: If there is any good rain fall during this period then these botanicals will be washed off. Hence, spray Quinalphos 25 EC (1.5 ml/l) for the management of stem fly in beans at 10 and 15 days after sowing.

Thrips are small insects, about 0.04 inch long. The characteristic symptom of attack is a silvery sheen of the attacked plant tissue, and white or silvery patches and streaks on leaves, fruits and pods. Affected tissue will dry up when the damage is severe.

Spray (4%) or neem/ pongamia soap ( 8-10g/l) after flowering, if required give sprays pulverised neem seed powder extract (PNSPE) at 10 days interval

Both adults and nymphs feed by puncturing the undersides of leaves and sucking out plant juices. Their toxic saliva causes spotting (white specks), yellowing, leaf curling, stunting and distortion of plants. They are also responsible for transmitting the organisms causing virus diseases in plants.

This pest is serious during North East monsoon period. Hence, during this period spray pulverised neem seed powder extract (PNSPE) (40 g/l) or Neem soap (10 g/l) at 7-10 days interval according to pest infestation.

Symptoms can appear on plants at any stage of development. Early-season infection results in typical pre-emergence (seed decay) and post-emergence (seedling death) “damping-off” symptoms, thereby reducing plant stands, referred to as poor emergence. Plants that survive early infection (damping-off) or become infected later display characteristic “root rot” symptoms, such as discoloured roots, stunting, wilting, etc.

Seed treatment with Carbendazim (2.0 g/kg)

Bean rust is caused by the fungus Uromyces appendiculatus and first appears as small pale spots (lesions), which become yellow with a small dark center. These spots enlarge and produce brick-red rust (summer) spores to spread the disease.

Rust resistant varieties like Arka Anoop

Spray Triadimefon (1.0g/l) or Propiconazole (0.5 ml/l) or Bitertanol (1.0 g/l)

Symptoms consist of greyish-white fungal growth on the surface of leaves, stems and pods. It can cause significant yield loss if it develops before or at flowering, particularly if the crop is under moisture stress. Late infections during the pod-filling stage can cause leaf drop but do not appear to seriously affect yield.

Spray Triadimefon (1.0g/l) or Propiconazole (0.5 ml/l) or Bitertanol (1.0 g/l).

Lesions on leaves usually appear as brown spots with a tan or silvery centre that are initially confined to tissue between major veins, which gives it an angular appearance.

Spray Carbendazim (1.0 g/l) or Tricyclozole (0.6g/l)

Common blight in beans is the most prevalent of bacterial bean diseases. Also called common bacterial blight, it shows up in misshapen leaves and pods. The leaves first start to develop small wet lesions that grow in size and dry out, usually becoming over an inch wide, brown and papery, with a yellow border.

Spray Bordeaux mixture or Copper Hydroxide or Copper Oxychloride (0.3 g/l)

Bean golden mosaic virus (BGMV) is transmitted by the whitefly Bemisia tabaci. The main symptoms characteristic of the disease are the yellow-green mosaic of leaves, variable levels of curling, generally stunted growth.

Follow Vector (Whitefly, Thrips etc) Management practices.

Vector (Whitefly, Thrips etc) Management:

• Growing African marigolds and nasturtiums has been reported to discourage whiteflies.
• Neem-based pesticides are reported to control young nymphs, inhibit growth and development of older nymphs, and reduce egg laying by adult whiteflies. They also reduce significantly the risk of Tomato Yellow Leaf Curl Virus transmission. Efficacy of neem-based pesticides can be enhanced by adding 0.1 to 0.5% of soft soap.
• Yellow sticky traps usually used to monitor the presence of whiteflies for timing of interventions, have also been used as a control method for low density infestations in enclosed environments. Yellow plastic gallon containers mounted upside down on sticks coated with transparent automobile grease or used motor oil. These should be placed in and around the field at about 10 cm above the foliage. Clean and re-oil when traps are covered with flies.

Chemical Treatment: Spray Imidacloprid 200S L (0.3ml/l) or Thiomethoxom 25 WP (0.3g/l) in nursery after 15 days of sowing and after 15 days of planting in main field

Bean common mosaic virus causes common mosaic symptoms that appear as a light green-yellow and dark green mosaic pattern developing on the trifoliolate leaves. Leaf discoloration is usually accompanied by puckering, blistering, distortion, and a downward curling and rolling. Virus is spread by Aphids hence Aphids control is important.

Chemical Treatment: Spray Imidacloprid 200S L (0.3ml/l) or Thiomethoxom 25 WP (0.3g/l) in nursery after 15 days of sowing and after 15 days of planting in main field